Car-truck.



J. o. NEIKIRK.

l CAB.A TRUGK. APPLIOATIOH FILED DEU. 2, 1912.

1.098,749. Patented June 2. ,1914.

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J. O. NBIKIRK.

CAR TRUCK.

APPLICATION FILED Dnc. 2, 1912.

Patented June 2,1914.

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Jjo. NBIKI'RK. GAR TRUOK.`

APPLICATION FILED DEO. 2, 1912.

1,098,749, Patented June 2, 1914. I a s'BTs-SHBET a.

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.IOIIN aNEIx-IRK, OF MORGAN PARK, ILLINOIS, nssrenon ro nerIoNnI, DUMr een COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION or MAINE.

CAR-TRUCK.

Speeication of Letters Patent.

Patented June 2,

pplicaton filed December 2, 19`12, Serial No. 734,588.

l To all whom it ma? concern Be it known that I, JOHN 0,. NEIKIRK, a

` Citizen of the United States, residing at Mora capacity of 150,000 pounds, Ilvxich is an in- 4crease of-liftyl per cent. overt` e capacity of the largest freight cars heretofore constructed. This increased wei ht renders it desirable that the cars shoul be supported upon six-wheel trucks, as too great weight would beimposed upon the wheels of the Ordinary four-wheel trucks now generally used.

Six-wheel trucks heretofore yconstructed have been provided with equalizer bars extending from the journal boxes of the central axle to the journal boxes of the outside axles, upon which rest the springs for supporting the truck frame. In order to equalize the weight upon the wheels, theportions of .the 'equalizer bars between the points where the springs rest and the central axle must be twice the length ot the portions of the equalizer bars between the points where the springs rest and the outside axles. This Aarrangement necessitates a length of wheel base undesirable for the trucks'of freight cars, especially when suchoarsare formed with bottoms composed of dropdoors, as the 'extent of the drop of the doors above the trucks' is necessarily less than thatA of "the doors between the trucks. It is, therefore, desirable. that the length of wheel base for sir-wheel trucks Ior use on 7freight cars she-LVM' be as short a'sfpossible in order that a maximum portion of the tloor area may be composed of drop doors, which will have a `maximum opening, and only as small a por tion as possible of the car door overlies the car trucks.

The primary object of my invention is to provide a six-wheel car truck in which the load will beequally distributed upon the wheels, and in which a minimunrlengthof wheel base will be required. l A further objey tdfnly invention is to provide a six-wheecar truck, which will be ing drawings, in which'the sam'e is illus? trated as embodied in a Convenient and practical form, and in whichl Figure 1 1s a' side view; Fig. 2, anend -elevational view partially broken away at oiie side; Fig. 3, a plan view, one side being shown in horizontal section and the end con'- necting bars broken away; and Fig. 4, a plan view of a modified constructidn in which the side frames, holsters and center plate bar are. all cast integrally.

The sanie reference' characters are used to designate similar parts in the several figures of the drawings. x

Reference characters A', A2 and A3 designate the three axles upon which are ixed the pairs of wheels d', a and a3, respectively. Bf and B2 designate the side frames of the truck, each of which ispro'vided with three pairs of depending pedestal jaws b', b2 and b3. Each of the side frames in the form of my invention shown in Figs. 1, :2, and 3 -is K orined integrally with the three pairs of pedestal jaws depending therefrom. The

endswof the side frames B and B2 are rigidly connected by end bars C and C2 which may be conveniently formed of an le irons riveted to anges on the ends of tie side frames. V

D?, D? and D3 designate the three journal boxes supported on the corresponding ends of the axles A', A2, and A3, and in engagei'nent with the pairs of pedestal jaws b', b? and b3, respectively.

F designates anequalizer bar which is` supported a't its ends upon the journal boxes D and D2. lOne of such equalizer bars is, of

course, rovided at each side of the truck.

G in icates a supplemental equalizer bar, one end of which overlies and is supported upon the journal box D3 and the cither end of which extends into a oolet g formed in the intermediate depending portion of the equalizer bar F, so that the end of the supplemental equalizer bar Gfl opposite to that supported upon the journal box A3 is supported by the equalizer bar F at a point inv teifmediate ofy the journal boxes D and D2. @ne of Athe.supplemental equalizer bars G is of course provided on each side of the truck.

izerbar-G at a point intermediate of the journal. boxes D2 and D2 and supporting the overlying end of a bolster K2, the opposite end of such bolster being supported by a similar pair of coiled springs resting upon the equalizer bar G at the opposite side of the truck.

K designates a beam extending longitudi 'nally of the truck at the center thereof and supported at its ends upon the holsters K and K2. Upon the beam K is supported the usual center bearing 7c.

k and 762 designate pairs of side bearings which are mounted upon the side frames B and B2 at points intermediate of the wheels. the side frames being preferably depressed between the wheels to form seats upon which are secured in any suitable manner, as by means "of rivets, the pairs of side bearings.

The operation of my improved six-wheel truck is as follows: The end of the car is supported upon-the center bearing 7c and its load transmitted to the holsters K and K2, to the side frames B" and B2, and thence through the pairs of coiled springs H and H2 to the equalizer bars F and supplemental equalizer bars G. The equalizer bars and supplemental equalizer bars transmit the `load to the journal boxes, so that theweight of the end of the'car is transmitted to the journal boxes and thence to the Wheels. It is necessary that onev third of the load supe ported by the truck should be transmitted to each pair of wheels in order that the Weight sustained by the truck may be equally distributed to the six wheels. One-halt' of the load is transmitted to each of the bolste'rs K and K2, and as the bolster K is support ed at its ends at the centers ol the equalizer bars F, it is obvious that one half theI load on the truck is divided between the pairs of wheels a and (L2. It is, however, necessary that the pairs of wheels a and a2 should support two thirds of the load upon the truck and the remaining pair ofl Wheels a3 support the other one third of the load. This is accomplished through the supplemental equalizer bars G upon which the ends of the bolsteypl@ are supported at points intermediate of the pairs of wheels a2 and a2. The ortion of each supplemental equalizer bar (i) between the springs H2 and the journal box D. is one half the length ofthe portionof the supplemental equalizer bar between the springs H2 and the end thereof which is supported at the center of the equalizer bar F. It is therefore evident that the half of the load on the truck which is supported by the bolster K2 is distributed two thirds to the pair of wheels al and one third to the two pairs of wheels a and a2.A The equalizer bars I, and consequently the pairs of wheels a and u2, therefore sustain two thirds of the entire .load on the truck while the remaining one third is supported by the pail-,oli wheels a. In lieu of making the longitudinal center bearing beam K, the bolsters K and K2, and the side trames I5 and B2, in separate castings, as shown in the embodiment of my invention illustrated in Figs. l, 2 and 3, I may cast all of those parts integrally, as shown in Fig. 4. In this figure M and M2 designate the `side trames;v

L and L2 the truck holsters, and L the longitudinal center bearing beam, all of which areformed in an integral casting. The ends of the side frames M and M2 are connected by transverse bars N and N2 which are shown as riveted at their ends to the corre spending ends of the side frames.

From the foregoing description. it `will be observed that I have invented an improved six-wheel car truck in which the load equally distributed u on the six wheels with out the necessity o. spacing the pairs of Wheels apart the distance required by the use of the ordinary equalizer bars.

In my improved car truck the load is equally distributed to theA wheels by means Vwhich permit a minimum. length of wheel base, and which consequently permit a more compact truck than heretofore possible.

It will be further observed that my inlproved car truck when used tor support drop bottom freight cars will, on account of its short wheel base, permit the drop doors forming a maximum portion of t e floor area, to drop to fully open position, and only a minimum portion of the doors :forming the floor area will overlie the car trucks, and hence be restricted in the extent of their opening.

While I have described more or less in detail the specific form in which I have illustrated my invention as embodied, yet I do not wish to bcnuiderstood as limiting myself thereto, as I contemplate changes iuI form, proportinn of parts, and substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

I claim:

l. In a car truck, the combination with a plurality of axles, of an equalizer bar at each side oit the car truck supported upon two adjacent axles, and a supplemental equalizer bar at each side of the truck supported at one end upon the .first equalizer bar and at its other end upon a third axle.

2.. In a car truck, the combination with a plurality of axles, of means 'tor supporting half the load equally upon two axles, and

` tion with the side frames thereof, of two side frames upon each of said equalizer bars intermediate of its ends and upon each of :,oosne means for supporting the other half of the load two-thirds upon a third axle and onethird upon said two axles.

3. In a six-wheel car truck, the combination with three axles, of journal boxes supi ported upon the ends of said axles, an equall izer bar at each side of the truck supported at its ends upon the journal boxes on adjacent axles, and a supplemental equalizer bar at each side of the truck sup orted at one end upon the axle box on the t iird axle and at. its other end u )on said first equalizer bar intermediate of t e ends thereof.

4. In a six-wheel car truck, the combination with side frames, of three axles, journal boxes supported upon the ends of said axles, an equalizer bar at each side of the truck supported at its ends upon the journal boxes on adjacent axles, a supplemental equalizer bar at each side of the truck supported at one end upon the journal box on the third axle and at its other end upon said first equalizer bar, and springs supporting said said supplemental bars intermediate of the said third axle and the adjacent axle.

5. In a six-wheel car truck, the combinai i l l i n holsters lrigidly connected at their ends to the said side frames, journal boxes supported i on the ends of said axles, load-sustaining@ means supported upon the journal boxes of I two adjacent axles, supplemental load-sustaining means supported upon the third axle and upon said first load-sustaining means, and springs suplporting the ends of said holsters upon sai load-sustaining means and l upon said supplemental load-sustaining; means.

(i. In a car truck, the combination with a l pluralit of axles, of an equalizer bar at each si e of the car truck supported upon two adjacent axles and having a ket formed therein intermediate of its en s, and a supplemental equalizer bar at each side of the truck supported at one end in the said 'pocket of the first equalizer bar and at its other end upon a third axle.

7. In a car truck, the combination with a plurality of axles, of load-sustaining means supported qpon two adjacent axles, supplemental loa sustaining means supported upon a third axle and upon said first loadsustaining means, and means for imposing a portion of the load upon each of said loadsustaining means.

8. In a car truck, the combination with a plurality of axles, of load-sustainincr means supported upon two adjacent axles and having a (pocket therein intermediate of the axles, an a supplemental load-sustaining means supported upon a third axle and upon said first load-sustaining means through engagement with the said pocket therein.

9. In a six-wheel ear truck, the combination with three axles, of journal boxes suported on the ends of said axles, an equalizer iiar at each side of the truck supported at its ends upon the journal boxes on adjacent axles and having a pocket intermediate of its ends, and a supplemental equalizer bar at each side of the truck supported at one end upon the journal box on the third axle and at its other end in the said pocket in the first equalizer bar.

In testimony whereof, I have subscribed my name.

JOHN O. NEIKIRK. Witnesses:

GEO. L. VILKINSON, ANNA L. War/rox.

Copie: ot this patent may be obtained for ve vents each, by addressing the Commissioner ot Iatentl, Washington, D. 0." 

